毕竟，FreeBSD是一个多用户多任务的操作系统。
一个多任务的操作系统中的每个进程运行在它自己的内存沙箱。
Each process in a multi-tasking OS runs in its own memory sandbox.
事实上，黑莓一开始就是以多任务为设计取向，我认为我们的操作系统一直被低估了。
The fact is that the BlackBerry was designed to multitask from day one. I think our operating system has constantly been underestimated.
他们将这种情形比作开发者似乎不得不要书写操作系统级别代码来处理“多任务”或“虚拟内存管理”的时代。
They compare this situation to the time when developers had to seemingly write operating system level code to handle "multi-tasking" or "virtual memory management".
操作系统的大部分功能被隐藏起来了，尽管能完成很多任务，但不像IPhone，它把众多选项都缩起在菜单栏里。
Much of the OS's functionality is hidden-android can do a lot, but unlike the iPhone it keeps many of its options stuffed in menu bars.
但是要使用多任务和硬件抽象等特性，几乎所有人都会使用某种类型的操作系统来运行他们的程序。
But to enjoy features such as multitasking and hardware abstraction, nearly everybody USES an OS of some kind to run their programs.
这包括一个文件系统和新的多任务操作系统本身。
This included a file system as well as the new multi-tasking operating system itself.
我们提供完整的推送，多任务操作系统，所有的程序都提供系统级的持续推送更新。
We offer a full push, multitasking operating system, where all the applications that actually have a wireless push registration with the OS are continuously updated.
现代操作系统向我们提供多任务的功能。
在多任务操作系统中我一个任务切换到另一个的过程。
The process of switching from one task to another in a multitasking operating system.
有一堆的批评：没有usb，不能多任务处理，内存低，不支持flash，没有摄像头，操作系统也不够完美，以及诸如此类的问题。
A lot of criticisms: no USB, no multitasking, low memory, no Flash support, no camera, no full OS, and so on and on.
在多任务操作系统中我一个任务切换到另一个的过程。
Thee process of switching from one task to another in a multitasking operating system.
任何多任务操作系统的本质部分，内核仅仅包含调度程序和上下文切换进程。
An essential part of any multitasking operating system, the kernel contains just the scheduler and context-switch routine.
优点：全新的设计，更好的显示效果，支持多任务处理的新操作系统，待机时间长，内置陀螺仪改进游戏体验，能进行视频通话的Facetime功能
Pros: Refreshed design, with much improved display; new operating system introduces multi-tasking; battery life improved; new gyroscope improves game-playing; video calling with Facetime.
本文论述的是一个可重构的多机多任务实时操作系统。
In the paper, a reconfigurable many-processor multitask realtime operating system is discussed.
介绍了该操作系统的内核、存储器管理和分区、分配策略、多任务调度及任务间通过信号量和消息处理进行通信的机制、中断管理等。
Introduce the kernel, memory management and partition, allocation strategy, multi-task scheduling and how to communicate by semaphore and message handling as well as interrupt management.
结果表明：所移植的操作系统能很好地工作在MCS - 51上，为MCS - 51的应用开发建立了一个实时控制多任务平台。
The result shows: the ported operating system can work well on MCS-51. So the Real-Time Kernel has been set up for the application and development of MCS-51.
于任何一个多任务操作系统，处理器调度是最重要，如果不是最重要的话，的一个组件。
The process scheduler is a highly important, if not the most important, component to every single multitasking operating system.
P 51XA是一种与MCS - 51兼容的16位单片机，运行速度快，存储器空间大，支持实时多任务操作系统。
P51XA is a MCS-51 compatible 16-bit MCU which runs fast, has a large memory capacity and supports RTOS.
本文介绍了在IBM PC的单用户单任务磁盘操作系统IBM PC—DOS或MS-DOS基础上实现的一种适用于各种监控系统的实时多任务系统。
This paper presents a real-time and multi-task processing system developed on IBM PC-DOS (or MS-DOS) which is a single user and single-task operating system.
QNX是实时、多任务、多用户、可嵌入的操作系统。
The operating system of QNX is the real-time, muti-task, muti-user embedding system .
本文首先介绍了嵌入式微处理器和嵌入式实时操作系统，给出了基于单处理器的多任务调度方案。
Firstly, the embedded microprocessor and embedded Real Time Operating System are described, and the multi-task scheduling solution based on single-processor is given.
文章分析了某型潜艇真航向测量系统的接口箱硬件特点及相应的软件要求。在接口箱系统的单任务操作系统下，需要一种任务调度策略来实现多任务实时性。
In this paper, the characteristics of the navigation data acquisition equipment used on some submarine are analyzed and the task scheduling demand of this set is rigorous.
基于该操作系统，本文提出了一种用于HD TV机顶盒的调度策略，经过实验，较好地解决了机顶盒系统中实时多任务调度的关键问题。
Based on this OS, a schedule strategy for HDTV set-top box solution is presented. Through test, the key problem of real-time multi-task schedule in set-top box system is settled.
基于该操作系统，本文提出了一种用于HD TV机顶盒的调度策略，经过实验，较好地解决了机顶盒系统中实时多任务调度的关键问题。
Based on this OS, a schedule strategy for HDTV set-top box solution is presented. Through test, the key problem of real-time multi-task schedule in set-top box system is settled.
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